How Do I Ping the Remote Firewall Public IP Address?
How Do I Ping the Remote Firewall Public IP Address?
Problem:To ping the remote firewall public IP address, perform the following steps:
From behind the local firewall, open the Command Prompt.
Enter ping [public ip address of the remote firewall]; press ENTER.
In this example, the public or "untrust" IP address of the remote firewall is 210.1.1.10.

This ping is successful because 210.1.1.10 replies. An unsuccessful ping displays Request timed out. Troubleshooting